3750 stack switches

[Horacio Gutierrez]

Hello,

If I have two switches in a stack can both stackable switches be connected to a core switch through gbics or just only one switch can be connected to the core and the other switch connects to the other stackable switch through an ethernet port which uses as a gateway to the core switch?

Thanks.

[Jon Marshall]

Horacio

Yes both can be connected to the core switch and in fact should be for redundancy.

If the switches in the stack are doing inter-vlan routing then you can use either -

1) 2 routed links, one from each switch or a L3 etherchannel

2) if the switches are only acting as L2 switches then use a L2 etherchannel (probably also a trunk link).

The 3750s support having an etherchannel spread across all switches in the stack.

Jon

[Horacio Gutierrez]

Hi Jon,

Could you please give me an example of a config of two routed links versus an L3 ethernetchannel config using both stack switches connected to the core switch.

Thanks.

[Horacio Gutierrez]

Jon,

Could a L3 etherchanneI be configure if I have one stackable switch with two uplinks, where one uplink goes to one core switch and the other up link goes to another core switch and both core switches are running HSRP or both uplinks should go to only one core switch to have an L3 etherchannel ?